Sceapee foe eollee mills



(No Model.)

J. WARRINGTON.

SGRAPBR FOB ROLLER MILLS. No. 314,278.

Pate'ntedMar. 24, 1885 y l INVENTOR. v 0*0, y

O .0 0,", y. 96.. M 777 ma UNirnn rares JESSE WARRINGTON, OFINDIANAPOLIS, INDIANA, ASSIGNOR TO` THE NORDYKE 86 M ARMON COMPANY, OFSAME PLACE.

SCRAPER FOR ROLLER-MILLS.

SPECIFICATION forming part of Letters Patent No. 314,278, dated March24, 1885.

Application filed August 30, 1884. (No model.)

To all whom it may concern:

Be it known that I, .Inssn WARRINGTON, of the city of Indianapolis,county of Marion, and State of Indiana, have invented certain new anduseful Improvements in Scrapers for Roller-Mills, of which the followingis a specification.

Said invention relates to that class of machinery for the reduction ofgrain known as roller-mills, and is especially applicable to the styleof mills illustrated in the Letters Patent of the United States issuedto the Nordyke & Marmon Company, No. 274,508, dated March 27, 1883, andNo. 277,525, dated May 15, 1883, being two of the patents referred Mypresent invention consists in an iniproved construction of scrapers forthe rolls, said scrapers being composed of a blade mounted in slides onthe frame-work, and weighted levers mounted on fulcrums, which operateto keep said blades in contact with the rolls, as will be hereinaftermore fully described.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters of reference indicate similar parts, Figurel is a transverse vertical section of a roller-mill provided withscrapers embodying my said invention; Fig. 2,an enlarged sectional viewof one of the Scrapers and rolls, similar to a portion of Fig. l; Fig.3, an under-side plan of the same, as seen from the dotted line z z inFig. 2; and Fig. 4, a detail perspective view showing one end of one ofthe scrapers and the adjacent parts.

In said drawings, the portions marked A represent the supportingframe-work of a mill; B, the scraper-blades, and O the weighted levers,whereby said scraper-blades are kept in contact with said rolls. Thelframe A is, in the main, similar to the frames of all the roller-millsmanufactured by the aforementioned Nordyke & Marmon Company, and described in the aforesaid Letters Patent, and needs no specialdescription. The ordinary rolls A are mounted upon and supported by thisframe. A casting,` A2, provided with projecting portions a, forming theslides for the blades, and a', forming fulcrums for the levers, ispreferably secured to this frame at each side; but said projectionsforming said slides and fulcrums may, if desired, be formed upon theframe itself. The scraper-blades B are mounted in slides composed of theprojections a, as stated, and are adapted to move therein toward andfrom the rolls. The weighted levers C rest on the fulcrums a', andoperate to hold the blades against the rolls. These fulcrums are soformed (see particularly Figs. 2 and 4) that when the rolls are liftedout of the machine, as is occasionally done for the purposes of repair,the said levers will be held thereby from forcing the scrapers out ofplace, as the lips c on said levers will come iu contact with the flatsides of the fulcrums shortly after the Scrapers pass above the pointwhere they come in contact with the rolls. These levers are held fromslipping endwise off the fulcrums by notches in the under sides of thescrapers, into which they enter. (See particularly Fig. 4.)

, My said invention, as a whole, forms a sim ple, effective, andinexpensive means for accomplishing the result sought. The parts are allstrong and durable, and not likely to be broken or get out of order.

Having thus fully described my said invention,what I claim as new, anddesire to secure by Letters Patent, is-

l. The combination, with the grinding-rolls of a roller-mill, of ascraper consisting of the scraper-blade B, slides a therefor, fulcrumsc', and levers C, extended across and supported by said fulcrums, theinner ends of which pass under and support said scraper-blade, and theouter ends of which are weighted, said several parts being arranged andoperating substantially as shown and specified.

2. The combination, in a roller-mill, of a grinding-roll, ascraper-blade mounted in slides on the frame-work, having notches in itslower edge, and levers which extend across and rest upon fulcrums andpass under and enter said notches, whereby said levers are securedagainst endwise movement on said fulcrums, substantially as set forth.

3. The combination. of a scraper blade, weighted levers for sustainingsaid scraperblade, and fulcrums on which said levers are mounted, saidfulcrums being flattened and IOO said levers having lips c, adapted tocome in In witness whereof I have hereunto set my Contact with the sideof said fulerums. and hand and seal, ab Indianapolis, Indiana, this thushold said levers from too great a move- 26th day of August, A. D. 1884.ment. substantially as seb forth.

4. The combination ofthe serapenlolade B, JESSE VARRINGTON. [L s] theweighted lever C, having lips c on the weight side of the fulerurn, andlche fulorum In presence ofa, attened or extended downwardly to fol-1nC. BRADFORD, a stop, with which said lip may come in e0n- CHAS. L.THURBER. ro tact, substantially as shown and specified.

